William weight



(No Model.)

W. WRIGHT.

FEEDING AIR T0 FURNAGES. No. 320,903. Patented June23, 1885.

ATTORNEYS.

N. PETERS. PhfloLithogrzpbor, Wahlnllom 0.0.

MNITED STATES \VILLIAM WRIGHT, OF NEWV YORK, N. Y.

FEEDING AIR TO FURNACES.

SPECIFICATION forming part of Letters Patent No. 320,903, dated June 23, 1885.

Application filed March 6, 1885. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM WRIGHT, of the city, county, and State of New York, have invented certain new and useful Improvements in Feeding Air to Furnaces, of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side elevation of a furnace to which my improvement has been applied. Fig. 2 is a sectional plan view of the same. Fig. 3 is a front elevation of the same.

Fig. 4 is a sectional side elevation of a T-head,

and showing part ofthe pipes connected with it.

The object of this invention is to provide attachments for furnaces, by the use of which the draft can be regulated and the gases formed from the coal can be wholly consumed.

The invention consists in the combination, with a furnace and its bridge-wall and the steam-space of a boiler, of pipes provided with valves and connected with T- heads provided with valves, and connected with pipes embedded in the walls of the furnace and connected with a chamber in the bridge-wall of the furnace, which chamber is provided with a pen forated cover, so that steam, air, or mixed steam and air can be heated and then intro duced into the said furnace, as will be hereinafter fully described and claimed.

A represents a furnace. B is the bridgewall. (J is a boiler, and D is the steam chest or dome of the boiler.

With the steam-chestD, or any other part of the steam-space of the boiler O, are connected the'ends of two pipes, E, which extend forward to the front of the furnace A, and then down along the front of the said furnace to the level of the upper part of the firechamber, at which point they enter the upper arms of the Theads F of the pipes G, and are bent at right angles to enter and discharge steam into the horizontal arms of the said T- heads. The connection between the upper arms of the T-heads F and the steam-pipes E is made steam-tight, and the lower arms of the said T-heads are provided with valves H, so that the entrance of air into the said T-heads can be readily regulated.

The steam-pipes E, a little above the T-heads F, are provided with valves I, so that the en trance of steam into the said T-heads can be readily regulated.

The pipes G are embedded in the walls of the furnace A, extend back to the rear end of the said furnace, pass through the end wall, pass forward through the side walls, are bent inward, and terminate in a chamber, J, fOI'H1(d in or at the rear side of the bridge-wall B.

The air-chamber J is covered with slabs K, of fire-brick or other material unaffected by heat, and are finely perforated, so that the contents of the said chamber will be discharged in fine streams into the products of combustion as they pass over the bridge-wall B.

\Vith this construction steam or air, or steam and air mixed in any desired proportions, can be introduced into the furnace A in any desired quantity to regulate the draft and consume the gaseous products of combustion, so that all the combustible parts of the fuel will be wholly consumed, and the fuel will thus be made to produce the greatest possible amount of heat. With this construction, also, the air will be heated and the steam superheated before being discharged into the furnace, so that they will have no tendency to lower the tem perature of the said furnace, and all the heat produced will be utilized for generating steam, heating air, or doing any other work for which the furnace may be intended.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, with the boiler C, the furnace A, and the bridge wall B, having the chamber J, provided with a perforated cover, K, of the pipes G, embedded in each side wall from front to and around the rear wall and returned to opposite sides of the chamber J, the T- heads F in front of the furnace, the horizontal arms of which are connected with the pipes G, valves H in the lower open ends of the vertical arms of said heads, and the pipes E, connecting steam'space of the boiler with the upper end of the vertical arms of the heads, and valves I in said pipes E, substantially as set forth.

XVILLIAM \NRIGHT.

WVitnesses:

J AMES T. GRAHAM, O. SnnewIoK. 

